Auxiliary heater



` A. ZACHAHIAS.

AUXILIARY HEATER.

APFLICATION FILED ocT.1o. 1918.

Patented Mar. 2, 1920.

2 SHEETS-SHEET l.

A. ZACHARIAS.

AUXILIARY HEATER.

APPLICATION FILED 061.10, 191e.

1,332,371. Patented Mar. 2, 1920.

2 SHEETS-SHEET 2.

5M www' MZ'MWLM AUGUST ZACI-IARIAS, 0F MINNEAPOLIS, MINNESOTA.

AUXILIARY HEATER.

To all 'whom t may concern.'

Be it known that I, AUGUST ZACHARIAS, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Auxiliary Heaters; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it `appertains to make and use the same. N

My invention has for its object to provide a simple and highly efficient auxiliary heater and soot collector for use in connection with stoves, furnaces and other heat producing plants. Generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims. p

It is a well known fact that there is genen ally very great waste in heat due to the unnecessary escape of hot flames or other gases in the iiues or smoke stacks. My invention provides an auxiliary heater which, when connected between the stove or furnace and the liue or smoke stack, will, without destroying the draft, accomplish two important results, towit, it will absorb and radiate a large amount of heat that would otherwise `be wasted and it will precipitate and collect the soot or solid matter carried in the smoke and will thus purify the smokev and substantially eliminate the smoke nuisance.

The invention is illustrated in the accompanying drawings wherein like characters indicate like parts throughout the several views. Referring to the drawings,

Figure 1 is a side elevation of the improved heater;

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1;

Fig. 3 is a vertical section taken onthe line 3-3 of Fig. 2; and

Fig. it is a view corresponding to Fig. 3, but showing the heater provided `with an exterior jacket and certain air circulating tubes. y

Considering rst the construction illustrated` in Figs. 1, 2 and 3, the numeral 5 indicates an` upright main, .shell of sheet metal, preferably of cylindrical form, .but possibly of angular cross section. This main `drum isV provided with upper and lower heads and ,above its lower head with a false bottoni- 6 that aifords' av lower air Specification of Letters latent.

Application led October 10, 1918.

Patented Mar. 2, 1920.

sel-iai No. 257,627.

8 is another air tube 9, the outer ends of` which are closed by heads 10. The central portion of the tube 9 is connected to the central portion of the flue 8 by a short upright air flue 11.

Located on the false bottom 6 and removable through one side of the drum 5 is a soot receptacle or box 12 into which the soot is directed by a conical hopper 13 ysupported within the drum above said box and having its upper edge rigidly secured to the interior of said drum. Cold air fines 14, as shown, two in number and located at diametrically opposite points, in respect to the axis of the drum, are extended through the false bottom 6, up through the hopper 13 and into the lower portion of the lower diametrical air iue 9.

Cold air from the room is adapted to be drawn into the air chamber 7, through lateral air intake ports which, as shown, are controlled by dampers 15. Cold fresh air from the exterior of the building or else-` where is adapted to be drawn into the said air chamber 7 through one or more socalled fresh air intake pipes 16 equipped with dampers 17, by means of which the said pipes may be closed or open to any desired extent.

The hot flames or products of combustion from the stove, furnace, or other heater are conveyed by a so-called smoke pipe 18 that opens through one side of the drum 5, preferably in horizontal line with the lower diametrical tube 9. A horizontal baffle plate 19 is attached to thedrum 5 and to the top of said tube 9 and prevents the iames or smoke delivered into the drum from the pipe 18 from passing directly upward and causes the same to take a downward course under the said tube 9. The smoke and other gases are carried from the top of the drum 5 through a smoke pipe 20.

The operation of the auxiliary heater described is substantially as followsi The smoke andk other gasesfentering the drum from the smoke pipe 18, as already stated, will be vdeflected downward under and .around the lower diametrical air tube `open ends of the flue 8.

purifier.

The construction illustrated in Fig. 4 is, or

and around the upright flue 11 and upper diametrical tube 8. In this way, the other flames or gases are brought into contact with a very large amount of metallic heat absorbing surface so that the air contained within the said tubes 8, 9 and 11 will be very much heated.

As the smoke yor other products pass under the tube 9, they enter a chamber that has relatively very large capacity and hence, their movement will be very much slowed up while they are at the same time making an upward turn. This will cause precipitation of the soot into thehopper 13 and this precipitation is further produced by the fact that the air in the lower part of lthe drum is relatively cool, which, in itself,

increases the tendency toward precipitation of the soot. I'Iere it is important to note that cold air in passing upward through the lues 14 will tend to keep the lower portion of Vthe air chamber Vwithin the drum 5 at low temperature. Of course, the dust precipitating into the' `hopper 13 will be caught by the dust box or receptacle 12, and romtime to time may be removed.

By manipulation of the dampers 15 and 17, the relative amounts of air drawn directly from the room close to the ioor and from the exterior of the building, orelsewhere through pipes 16, may beproportioned in any desired way. All of the cold air entering the chamber 7 will be drawn upward through the iiues 14 and into the lower air tube 9. From the air tube 9, the air which has been partly heated in its passage upward through the iues 14 will be further heated as it passes on upward Y through the flues 11 and 8 and will -be discharged outward into the room through the This arrangement gives a highly etlicient auxiliary heater, as well as a soot precipitator and `smoke may be like, or substantially like that illustrated in Figs. 1, 2 and 3 with thevaddition thereto of an outer j acket'2-1 which is placed around the upper portion of the drum but terminates atits lower portion, preferably about in line with the upper portion ofthe hopper 13. This jacket 21 affords an air chamber 22 around and over the top of the 'upper portionof the drum. This jacket 21,

at its lower portion, is provided with air intake pipes `23) that may be short, as illustrated in Fig. 4, or may be extended from a distant point. These pipes 23 will preferably be provided with dampers 24.` Air drawn in through the pipes 23 and heated in the chamber 22 may be discharged through hot air delivery pipes 25 which may lead to different rooms or any suitable point of delivery. Also, in this arrangement, the hot air discharged from the open ends of up- 1. In a heater, the combination with anupright drum having smoke inlet and outlet pipes, of a transverse air tube extended through said drum, a hopper in the lower portion of said drum, and air intake tubes extending within said drum upward through saidhopper and connected to said air tube, said air intake tubes being open at their lower ends for drawing air from a point near the floor.` y

2. In an auxiliary heater, the combination with an upright drum having smoke inlet and outlet pipes, of approximately diametrical air tubes extended through said drum, one above the other and at an angle, one with the other, an upright air tube centrally connecting said diametrical air tubes, the said upper diametrical tube having open ends, the smoke intake pipe of said drum being arranged to deliver the hot gases against said lower diametrical tube, a hopper in the lower portion oi said drum, and air intake tubes extended within said drum upward through said hopper and leading to said lower diametrical air tube.

3. In an auxiliary heater, the combination with an upright drum having smoke inlet and outlet pipes, of approximately diametrical air tubes extended through said drum, one above the other and at an angle, one with the other, an upright air tube centrally connecting said diametrical air tubes,

the said upper diametrical tube having openV `intake tubes extended within said drum upward through said hopper and leading to said lowerdiametrical air tube, and a baliie plate located above the smoke intake 'pipeof said drum and extended from the adjacent wall of said drum to the wall of said lower diametrical air tube.

los

4. In an auxiliary heater, thecombination with an upright drum having smoke inlet trally connecting said diametrical air tubes, l the said upper diametrical tube having open ends, the smoke intake pipe of said drum being arranged to deliver lthe hot gases against said lower diametrical tube, a hopper in the lower portion of said drum, an air chamber in the bottom of said drum below said hopper, upright air tubes within said drum extended upward from saidlower air chamber through said hopper and connected to said diametrioal tube, and air supply duets opening into said lower air chamber.

5. In an auxiliary heater, the combination with an upright drum having smoke inlet und outlet pipes, of approximately diametrieel air tubes extended through said drum, one above the other and at an angle, one with the other, an upright air tube centrally connecting said diametrioal air tubes, the said upper diametrieal tube having open ends, the smoke intake pipe of said drum being arranged to deliver the hot gases against said lower diemetrical tube, a hopper in the lower portion of said drum, an air chamber 15 lthrough said hopper and connected to said diametrioul tube, and independent damper 20 controlled air duets opening into said lower air chamber.

In testimony whereof I aiiix my signature in presence of two witnesses.

AUGUST ZACI-IARIAS. Witnesses:

CLARA DEMARnsT, BERNICE Gr. BAUMANN. 

